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doc: Update the ID alocation section

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The method described of alocation IDs has been wrong at least since version
1.0.  This commit updates it to correspond to the way IDs are chosen in
versions >= 1.0.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Jason Ekstrand 2013-08-18 16:52:36 -05:00 • committed by Kristian Høgsberg
parent d1fb2f60b8
commit b6c49c9e25
1 changed files with 10 additions and 4 deletions
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14
doc/publican/sources/Protocol.xml
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@ -196,10 +196,16 @@
<section id="sect-Protocol-Creating-Objects"> <section id="sect-Protocol-Creating-Objects">
<title>Creating Objects</title> <title>Creating Objects</title>
<para> <para>
Each object has a unique ID. The IDs are allocated by the Each object has a unique ID. The IDs are allocated by the entity
client, from a range of IDs. The server tracks how many creating the object (either client or server). IDs allocated by the
IDs are left in the current range and sends a new range client are in the range [1, 0xfeffffff] while IDs allocated by the
when the client is about to run out. server are in the range [0xff000000, 0xffffffff]. The 0 ID is
reserved to represent a null or non-existant object.
For efficiency purposes, the IDs are densely packed in the sense that
the ID N will not be used until N-1 has been used. Any ID allocation
algorithm that does not maintain this property is incompatible with
the implementation in libwayland.
</para> </para>
</section> </section>
<section id="sect-Protocol-Compositor"> <section id="sect-Protocol-Compositor">